classes/obmc-phosphor-systemd.bbclass - openbmc/meta-phosphor - Gitiles

 # Common code for systemd based services.
 #
 # Prior to inheriting this class, recipes can define services like this:
 #
 # SYSTEMD_SERVICE_${PN} = "foo.service bar.socket baz@.service"
 #
 # and these files will be added to the main package if they exist.
 #
 # Alternatively this class can just be inherited and
 # ${PN}.service will be added to the main package.
 #
 # Other variables:
 # INHIBIT_SYSTEMD_RESTART_POLICY_${unit}
 #    Inhibit the warning that is displayed if a service unit without a
 #    restart policy is detected.
 #
 # SYSTEMD_SUBSTITUTIONS_${path-relative-to-system_unitdir}
 #    Variables in this list will be substituted in the specified
 #    file during install (if bitbake finds python {format} strings
 #    in the file itself).  List entries take the form:
 #      VAR:VALUE
 #    where {VAR} is the format string bitbake should look for in the
 #    file and VALUE is the value to substitute.
 #
 # SYSTEMD_USER_${PN}.service = "foo"
 # SYSTEMD_USER_${unit}.service = "foo"
 #    The user for the unit/package.


 inherit obmc-phosphor-utils
 inherit systemd
 inherit useradd

 _INSTALL_SD_UNITS=""
 SYSTEMD_DEFAULT_TARGET ?= "obmc-standby.target"

 # Big ugly hack to prevent useradd.bbclass post-parse sanity checker failure.
 # If there are users to be added, we'll add them in our post-parse.
 # If not...there don't seem to be any ill effects...
 USERADD_PACKAGES ?= " "
 USERADD_PARAM_${PN} ?= ";"


 def SystemdUnit(unit):
     class Unit(object):
         def __init__(self, unit):
             self.unit = unit

         def __getattr__(self, item):
             if item is 'name':
                 return self.unit
             if item is 'is_activated':
                 return self.unit.startswith('dbus-')
             if item is 'is_template':
                 return '@.' in self.unit
             if item is 'is_instance':
                 return '@' in self.unit and not self.is_template
             if item in ['is_service', 'is_target']:
                 return self.unit.split('.')[-1] == item
             if item is 'base':
                 cls = self.unit.split('.')[-1]
                 base = self.unit.replace('dbus-', '')
                 base = base.replace('.%s' % cls, '')
                 if self.is_instance:
                     base = base.rstrip('@%s' % self.instance)
                 if self.is_template:
                     base = base.rstrip('@')
                 return base
             if item is 'instance' and self.is_instance:
                 inst = self.unit.rsplit('@')[-1]
                 return inst.rsplit('.')[0]
             if item is 'template' and self.is_instance:
                 cls = self.unit.split('.')[-1]
                 return '%s@.%s' % (self.base, cls)
             if item is 'template' and self.is_template:
                 return '.'.join(self.base.split('@')[:-1])

             raise AttributeError(item)
     return Unit(unit)


 def systemd_parse_unit(d, path):
     import ConfigParser
     parser = ConfigParser.SafeConfigParser()
     parser.optionxform = str
     parser.read('%s' % path)
     return parser


 python() {
     def check_sd_unit(d, unit):
         searchpaths = d.getVar('FILESPATH', True)
         path = bb.utils.which(searchpaths, '%s' % unit.name)
         if not os.path.isfile(path):
             bb.fatal('Did not find unit file "%s"' % unit.name)

         parser = systemd_parse_unit(d, path)
         inhibit = listvar_to_list(d, 'INHIBIT_SYSTEMD_RESTART_POLICY_WARNING')
         if unit.is_service and \
                 not unit.is_template and \
                 unit.name not in inhibit and \
                 not parser.has_option('Service', 'Restart'):
             bb.warn('Systemd unit \'%s\' does not '
                 'have a restart policy defined.' % unit.name)


     def add_sd_unit(d, unit, pkg):
         name = unit.name
         unit_dir = d.getVar('systemd_system_unitdir', True)
         set_append(d, 'SRC_URI', 'file://%s' % name)
         set_append(d, 'FILES_%s' % pkg, '%s/%s' % (unit_dir, name))
         set_append(d, '_INSTALL_SD_UNITS', name)
         set_append(d, '_MAKE_SUBS', '%s' % name)

         for x in [
                 'base_bindir',
                 'bindir',
                 'sbindir',
                 'SYSTEMD_DEFAULT_TARGET' ]:
             set_append(d, 'SYSTEMD_SUBSTITUTIONS_%s' % name,
                 '%s:%s' % (x, d.getVar(x, True)))


     def add_sd_user(d, unit, pkg):
         name = unit.name
         opts = [
             '--system',
             '--home',
             '/',
             '--no-create-home',
             '--shell /sbin/nologin',
             '--user-group']

         var = 'SYSTEMD_USER_%s' % name
         user = listvar_to_list(d, var)
         if len(user) is 0:
             var = 'SYSTEMD_USER_%s' % pkg
             user = listvar_to_list(d, var)
         if len(user) is not 0:
             if len(user) is not 1:
                 bb.fatal('Too many users assigned to %s: \'%s\'' % (var, ' '.join(user)))

             user = user[0]
             set_append(d, 'SYSTEMD_SUBSTITUTIONS_%s' % name,
                 'USER:%s' % user)
             if user not in d.getVar('USERADD_PARAM_%s' % pkg, True):
                 set_append(
                     d,
                     'USERADD_PARAM_%s' % pkg,
                     '%s' % (' '.join(opts + [user])),
                     ';')
             if pkg not in d.getVar('USERADD_PACKAGES', True):
                 set_append(d, 'USERADD_PACKAGES', pkg)


     pn = d.getVar('PN', True)
     if d.getVar('SYSTEMD_SERVICE_%s' % pn, True) is None:
         d.setVar('SYSTEMD_SERVICE_%s' % pn, '%s.service' % pn)

     for pkg in listvar_to_list(d, 'SYSTEMD_PACKAGES'):
         svc = listvar_to_list(d, 'SYSTEMD_SERVICE_%s' % pkg)
         svc = [SystemdUnit(x) for x in svc]
         tmpl = [x.template for x in svc if x.is_instance]
         tmpl = list(set(tmpl))
         tmpl = [SystemdUnit(x) for x in tmpl]
         svc = [x for x in svc if not x.is_instance]

         for unit in tmpl + svc:
             check_sd_unit(d, unit)
             add_sd_unit(d, unit, pkg)
             add_sd_user(d, unit, pkg)
 }


 python systemd_do_postinst() {
     for f in listvar_to_list(d, '_MAKE_SUBS'):
         subs = dict([ x.split(':') for x in
             listvar_to_list(d, 'SYSTEMD_SUBSTITUTIONS_%s' % f)])
         if not subs:
             continue

         path = d.getVar('D', True)
         path += d.getVar('systemd_system_unitdir', True)
         path += '/%s' % f
         with open(path, 'r') as fd:
             content = fd.read()
         with open(path, 'w+') as fd:
             try:
                 fd.write(content.format(**subs))
             except KeyError as e:
                 bb.fatal('No substitution found for %s in '
                     'file \'%s\'' % (e, f))
 }


 do_install_append() {
         # install systemd service/socket/template files
         [ -z "${_INSTALL_SD_UNITS}" ] || \
                 install -d ${D}${systemd_system_unitdir}
         for s in ${_INSTALL_SD_UNITS}; do
                 install -m 0644 ${WORKDIR}/$s \
                         ${D}${systemd_system_unitdir}/$s
                 sed -i -e 's,@BASE_BINDIR@,${base_bindir},g' \
                         -e 's,@BINDIR@,${bindir},g' \
                         -e 's,@SBINDIR@,${sbindir},g' \
                         ${D}${systemd_system_unitdir}/$s
         done
 }


 do_install[postfuncs] += "systemd_do_postinst"
	# Common code for systemd based services.
	#
	# Prior to inheriting this class, recipes can define services like this:
	#
	# SYSTEMD_SERVICE_${PN} = "foo.service bar.socket baz@.service"
	#
	# and these files will be added to the main package if they exist.
	#
	# Alternatively this class can just be inherited and
	# ${PN}.service will be added to the main package.
	#
	# Other variables:
	# INHIBIT_SYSTEMD_RESTART_POLICY_${unit}
	# Inhibit the warning that is displayed if a service unit without a
	# restart policy is detected.
	#
	# SYSTEMD_SUBSTITUTIONS_${path-relative-to-system_unitdir}
	# Variables in this list will be substituted in the specified
	# file during install (if bitbake finds python {format} strings
	# in the file itself). List entries take the form:
	# VAR:VALUE
	# where {VAR} is the format string bitbake should look for in the
	# file and VALUE is the value to substitute.
	#
	# SYSTEMD_USER_${PN}.service = "foo"
	# SYSTEMD_USER_${unit}.service = "foo"
	# The user for the unit/package.


	inherit obmc-phosphor-utils
	inherit systemd
	inherit useradd

	_INSTALL_SD_UNITS=""
	SYSTEMD_DEFAULT_TARGET ?= "obmc-standby.target"

	# Big ugly hack to prevent useradd.bbclass post-parse sanity checker failure.
	# If there are users to be added, we'll add them in our post-parse.
	# If not...there don't seem to be any ill effects...
	USERADD_PACKAGES ?= " "
	USERADD_PARAM_${PN} ?= ";"


	def SystemdUnit(unit):
	class Unit(object):
	def __init__(self, unit):
	self.unit = unit

	def __getattr__(self, item):
	if item is 'name':
	return self.unit
	if item is 'is_activated':
	return self.unit.startswith('dbus-')
	if item is 'is_template':
	return '@.' in self.unit
	if item is 'is_instance':
	return '@' in self.unit and not self.is_template
	if item in ['is_service', 'is_target']:
	return self.unit.split('.')[-1] == item
	if item is 'base':
	cls = self.unit.split('.')[-1]
	base = self.unit.replace('dbus-', '')
	base = base.replace('.%s' % cls, '')
	if self.is_instance:
	base = base.rstrip('@%s' % self.instance)
	if self.is_template:
	base = base.rstrip('@')
	return base
	if item is 'instance' and self.is_instance:
	inst = self.unit.rsplit('@')[-1]
	return inst.rsplit('.')[0]
	if item is 'template' and self.is_instance:
	cls = self.unit.split('.')[-1]
	return '%s@.%s' % (self.base, cls)
	if item is 'template' and self.is_template:
	return '.'.join(self.base.split('@')[:-1])

	raise AttributeError(item)
	return Unit(unit)


	def systemd_parse_unit(d, path):
	import ConfigParser
	parser = ConfigParser.SafeConfigParser()
	parser.optionxform = str
	parser.read('%s' % path)
	return parser


	python() {
	def check_sd_unit(d, unit):
	searchpaths = d.getVar('FILESPATH', True)
	path = bb.utils.which(searchpaths, '%s' % unit.name)
	if not os.path.isfile(path):
	bb.fatal('Did not find unit file "%s"' % unit.name)

	parser = systemd_parse_unit(d, path)
	inhibit = listvar_to_list(d, 'INHIBIT_SYSTEMD_RESTART_POLICY_WARNING')
	if unit.is_service and \
	not unit.is_template and \
	unit.name not in inhibit and \
	not parser.has_option('Service', 'Restart'):
	bb.warn('Systemd unit \'%s\' does not '
	'have a restart policy defined.' % unit.name)


	def add_sd_unit(d, unit, pkg):
	name = unit.name
	unit_dir = d.getVar('systemd_system_unitdir', True)
	set_append(d, 'SRC_URI', 'file://%s' % name)
	set_append(d, 'FILES_%s' % pkg, '%s/%s' % (unit_dir, name))
	set_append(d, '_INSTALL_SD_UNITS', name)
	set_append(d, '_MAKE_SUBS', '%s' % name)

	for x in [
	'base_bindir',
	'bindir',
	'sbindir',
	'SYSTEMD_DEFAULT_TARGET' ]:
	set_append(d, 'SYSTEMD_SUBSTITUTIONS_%s' % name,
	'%s:%s' % (x, d.getVar(x, True)))


	def add_sd_user(d, unit, pkg):
	name = unit.name
	opts = [
	'--system',
	'--home',
	'/',
	'--no-create-home',
	'--shell /sbin/nologin',
	'--user-group']

	var = 'SYSTEMD_USER_%s' % name
	user = listvar_to_list(d, var)
	if len(user) is 0:
	var = 'SYSTEMD_USER_%s' % pkg
	user = listvar_to_list(d, var)
	if len(user) is not 0:
	if len(user) is not 1:
	bb.fatal('Too many users assigned to %s: \'%s\'' % (var, ' '.join(user)))

	user = user[0]
	set_append(d, 'SYSTEMD_SUBSTITUTIONS_%s' % name,
	'USER:%s' % user)
	if user not in d.getVar('USERADD_PARAM_%s' % pkg, True):
	set_append(
	d,
	'USERADD_PARAM_%s' % pkg,
	'%s' % (' '.join(opts + [user])),
	';')
	if pkg not in d.getVar('USERADD_PACKAGES', True):
	set_append(d, 'USERADD_PACKAGES', pkg)


	pn = d.getVar('PN', True)
	if d.getVar('SYSTEMD_SERVICE_%s' % pn, True) is None:
	d.setVar('SYSTEMD_SERVICE_%s' % pn, '%s.service' % pn)

	for pkg in listvar_to_list(d, 'SYSTEMD_PACKAGES'):
	svc = listvar_to_list(d, 'SYSTEMD_SERVICE_%s' % pkg)
	svc = [SystemdUnit(x) for x in svc]
	tmpl = [x.template for x in svc if x.is_instance]
	tmpl = list(set(tmpl))
	tmpl = [SystemdUnit(x) for x in tmpl]
	svc = [x for x in svc if not x.is_instance]

	for unit in tmpl + svc:
	check_sd_unit(d, unit)
	add_sd_unit(d, unit, pkg)
	add_sd_user(d, unit, pkg)
	}


	python systemd_do_postinst() {
	for f in listvar_to_list(d, '_MAKE_SUBS'):
	subs = dict([ x.split(':') for x in
	listvar_to_list(d, 'SYSTEMD_SUBSTITUTIONS_%s' % f)])
	if not subs:
	continue

	path = d.getVar('D', True)
	path += d.getVar('systemd_system_unitdir', True)
	path += '/%s' % f
	with open(path, 'r') as fd:
	content = fd.read()
	with open(path, 'w+') as fd:
	try:
	fd.write(content.format(**subs))
	except KeyError as e:
	bb.fatal('No substitution found for %s in '
	'file \'%s\'' % (e, f))
	}


	do_install_append() {
	# install systemd service/socket/template files
	[ -z "${_INSTALL_SD_UNITS}" ] \|\| \
	install -d ${D}${systemd_system_unitdir}
	for s in ${_INSTALL_SD_UNITS}; do
	install -m 0644 ${WORKDIR}/$s \
	${D}${systemd_system_unitdir}/$s
	sed -i -e 's,@BASE_BINDIR@,${base_bindir},g' \
	-e 's,@BINDIR@,${bindir},g' \
	-e 's,@SBINDIR@,${sbindir},g' \
	${D}${systemd_system_unitdir}/$s
	done
	}


	do_install[postfuncs] += "systemd_do_postinst"